Now the endpoint boots to what looks like the FOG imaging menu but then goes away after about 2 seconds.

There is a boot menu timeout that FOG has. The value is set in the FOG-Settings menus (sorry don’t remember off the top of my head). If you hit the up or down arrow within the 2 seconds you should be able to navigate the fog ipxe menu

What a great reply, it wasn’t the complete answer but caused me to look deeper into the DHCP server and configuration. The PXE options has been set in the master scope section of the server. However, I entered the settings into the action scope for the V-Lan I was looking to boot from.

Now the endpoint boots to what looks like the FOG imaging menu but then goes away after about 2 seconds. Is there a timeout setting on the FOG server and if so where? Or something on my endpoint side in the BIOS possibly?

@briancurry Just guessing here but to me it looks like you are using an external DHCP server, provided by your network admins?! Just looks like to me from the IPs seen on the screen. So I am wondering who did set up the DHCP server to PXE boot clients? Are DHCP options 66 and 67 set correctly? Possibly there is a typo in the filename (option 67), maybe just a leading or tailing space character?!